'One country, two systems' is a Chinese invention and there is no question of foreign countries monitoring its implementation, according to Commissioner of the Ministry of Foreign Affairs Yang Wenchang . Summing up his first year in Hong Kong in an article in the South China Morning Post today, Mr Yang says his office attaches great importance to 'friendly' co-operation with foreign missions and organisations in Hong Kong. 'I would like to take this opportunity to remind a certain quarter to refrain from interfering in Hong Kong's political affairs, which by nature belong to China's internal affairs,' he says. He stops short of naming consulates but says he highly approves of British Prime Minister Tony Blair's position that Hong Kong should become a bridge of win-win co-operation between Britain and the mainland. In his article, Mr Yang says Hong Kong's prosperity came when colonialism was in decline. He says the successful formula of 'one country, two systems' was never a result of diplomatic negotiations. 'The concept of 'one country, two systems' was invented by the Chinese people, and stands as a living testimony to their creativeness and wisdom.' 'The Chinese government will unswervingly pursue the policy of 'one country, two systems'. There is no doubt about that.' But he concedes the formula is new and therefore difficulties will crop up.